<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 添加角色按钮 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <el-row
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      type="warning"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                    {{ scope.row }}
                </pre> -->
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button size="mini" type="danger" icon="el-icon-delete" @click="editRole(scope.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 弹窗 -->
    <el-dialog
      title="分配权限"
      :visible.sync="SetRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>

      <span slot="footer" class="dialog-footer">
        <el-button @click="SetRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加角色 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      
      <!-- 内容主体 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
        <!-- 编辑用户 -->
        <el-dialog title="修改角色" :visible.sync="editDialogVisible" width="30%">
      <el-form :model="editRolesForm" ref="editFormRef" label-width="100px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editRolesForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editRolesForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editFormInfo">确 定</el-button>
      </span>
    </el-dialog>
  
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      roleList: [],
      SetRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: "authName",
        children: "children",
      },
      defKeys: [],
      //   即将分配权限的id
      roleId: "",
      // 表单验证规则
      addFormRules:{
        roleName: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度在3到10个字符之间",
            trigger: "blur",
          },
        ],
        roleDesc: [
          { required: true, message: "请输入角色描述", trigger: "blur" },
          {
            min: 3,
            max: 15,
            message: "描述长度在3到15个字符之间",
            trigger: "blur",
          },
        ],
      },
          // 修改表单的验证规则对象
   
      // 添加用户的表单数据
      addForm:{
        roleName:'',
        roleDesc:''
      },
      addDialogVisible: false,
      editDialogVisible:false,
      // 修改用户的表单数据
      editRolesForm:{
       
      }
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.roleList = res.data;
    },
    // 根据id删除对应的权限
    async removeRightById(role, rightId) {
      // 弹框提示
      const confirmResult = await this.$confirm(
        "此操作将永久删除, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("取消了删除");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败");
      }
      role.children = res.data;
    },
    // 分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id;
      const { data: res } = await this.$http.get("rights/tree");

      if (res.meta.status !== 200) {
        return this.$message.error("获取权限失败");
      }
      // 把获取到的权限数据保存到data中
      this.rightsList = res.data;

      // 递归获取三级节点的id
      this.getLeafKeys(role, this.defKeys);

      this.SetRightDialogVisible = true;
    },
    // 通过递归，获取角色下三级权限id，并保存到defkeys数组中
    getLeafKeys(node, arr) {
      // 如果node节点不包含children 属性则是三级节点
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach((item) => this.getLeafKeys(item, arr));
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = [];
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]
      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败");
      }
      this.$message.success("分配权限成功");
      this.getRolesList();
      this.SetRightDialogVisible = false;
    },
   async editRole(id){
           // 根据id删除用户信息
      // 弹框
   const confirmResult =  await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>{
          return err
        })
        if(confirmResult !=='confirm'){
          return this.$message.info('取消删除')
        }
 const {data:res} =   await this.$http.delete('roles/' + id)
 if(res.meta.status!==200){
  return this.$message.error('删除失败')
 }
 this.$message.success('删除成功')
 this.getRolesList()

    },
    // 添加用户
    addRole(){
      this.$refs.addFormRef.validate(async (valid) =>{
        if(!valid) return 
        const {data:res} = await this.$http.post("roles", this.addForm)
        if(res.meta.data !==200){
          this.$message.error('添加失败')
        }      
        this.$message.success('添加成功')
        this.addDialogVisible = false
        this.getRolesList()
      
      })
    },
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    // 监听关闭修改用户按钮
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    // 得到修改用户的信息
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败");
      }
      this.editRolesForm = res.data;
      this.editDialogVisible = true;
    },
    editFormInfo(){
      this.$refs.editFormRef.validate(async valid=>{
        if(!valid)return
        // 发起修改用户信息的数据请求
      const {data:res} = await this.$http.put('roles/' + this.editRolesForm.roleId,{
        roleName: this.editRolesForm.roleName,
         roleDesc: this.editRolesForm.roleDesc
        })
        if(res.meta.status!==200){
          return this.$message.error('更新失败')
        }
        //关闭对话框
        this.editDialogVisible = false
        // 刷新数据
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新成功')
      })

    },
  },
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>